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Fact Crossword 18 (Facts 1-274)

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Across
6.the SI unit for the volume of a liquid is the ____ (Fact 57)
7.all of the ____ ____ are small, dense, and have rocky surfaces (Fact 140)
11.______ is the fourth planet from the sun, is known as the Red Planet, has a lot of volcanic activity and has two moons (Fact 149)
12.______ has the densest atmosphere of all the inner planets; its atmosphere is made of carbon dioxide and sulfuric acid (Fact 143)
14.the atomic mass of an elements is the weighted average of all of the _____ of that element (Fact 253)
15.the SI unit of mass is the _____ (Fact 65
16.______ is when a liquid changes to a gas (Fact 231)
17.the _______ of matter a substance is in is determined by how fast the particles move and how strongly attracted they are to each other (Fact 216)
18.______, reactivity with an acid, reactivity with a base, and reactivity with oxygen are examples of chemical properties (Fact 211)
20.Group 18 elements are called the ____ ____ or the inert gases (Fact 272)
21.the SI unit for the volume of a solid is the ___ ___ (Fact 54)
24.the _____ or independent variable in an investigation is the factor that is purposely changed; it is what is being tested (Fact 22)
27.there are ______ groups or families of elements on the Periodic Table (Fact 270)
28.There are seven _______ or rows of elements on the Periodic Table (Fact 269)
30.condensation is when a gas changes to a ______ (Fact 236)
31.______ properties describe the ability of a substance to change into a new substance with different properties; these properties are identified by testing (Fact 210)
32.the SI unit of weight is the ____ (Fact 68)
33.____ properties of matter can be observed without changing the identity of matter (Fact 204)
34._______ is able to support life because it has water on its surface and in its atmosphere (Fact 146)
Down
1.the four ____ ____, Jupiter, Saturn, Uranus, and Neptune are called gas giants meaning they do not have solid surfaces (Fact 153)
2.all of the gas giants have ____ made of rock and ice and have many moons (Fact 154)
3.all forces act in _______; one is called the action force and the other is called the reaction force (Fact 127
4.______ are found to the left of the zigzag line on the Periodic Table (Fact 266)
5.elements on the Periodic Table are arranged by increasing ____ ___ (Fact 264)
8.moving ________(atoms and molecules) make up all matter; these atoms and molecules are attracted to each other (Fact 215)
9._______ is the rate at which velocity (speed and direction) changes over time (Fact 82)
10.the four inner or ______ planets are Mercury, Venus, Earth and Mars (Fact 139)
13.________ acceleration occurs when an object moves at constant speed in a circular direction (Fact 85)
19.the _____ or dependent variable in an investigation is the variable that is expected to change because of the manipulated variable; it is what is being measured (Fact 23)
21.a _____ is made of two or more elements that are chemically combined (Fact 274)
22.the ______ variables in an investigation are the factors intentionally kept the same (Fact 21)
23.all nonmetals except for ______ are found to the right of the zigzag line on the Periodic Table (Fact 267)
25.elements in the same group or family have similar ______ or characteristics (Fact 271)
26._____ ,mass, volume, freezing point, melting point, and boiling point are examples of physical properties of matter (Fact 205)
29.atoms from the same _______ always have the same number of protons (Fact 263)

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